[Elecraft] K2 Problem in NAQP

[Guy Olinger K2AV]

Probably what is most important at this point, is that the K2 is over
a decade old design, and your uses of it (data, etc) are probably as
afterthought in the original design as one can possibly get.  Have to
remember that single sideband was (and is) optional.  That people have
been able to adapt it to so many varying uses is rather amazing, given
the absence of these altogether in the original design.

It was built to be an internal battery portable 10 watt CW rig, my use
still for mine. It turned out to have an incredible classic RX, and
from the beginning laid the groundwork for what we now enjoy in the
K3. Mods, and mods, and mods later, the K2 has a 100 watt option, with
SSB, with many early issues neatly worked out.  The sideband flip
issue cannot be resolved without starting all over. Nor for that
matter the far tinier limited firmware capability, where far greater
capability would be required to pull back many of the K3 subtleties
into the K2.

This lack does not seem to be a great issue though, as K2's are STILL
being sold and built, and used K2's are sold at persisting good
prices. I have yet to see one being parted out because someone can't
sell it otherwise.

73, Guy.

K2 #1239
K3 #1239

On Mon, Jul 25, 2011 at 6:47 PM, radioshoppe <jim.w0em at yahoo.com> wrote:
> Rich, Don and others who have responded,
>
> SRI it has taken several days to respond.  Sometimes life gets in the way of
> fun.  Please don't take my comments below personal.  They are just my
> observations and thoughts.
>
> I have done a bit more reading and observing and here is what I know.  The
> K2 in RTTY mode now transmits and receives on the same frequency after
> aligning the RTTY filters per Don's instructions.  When the K3 is in FDK-D
> mode both radios transmit and receive to each other when both dials indicate
> the same frequency.  When observing the "bracket" at the bottom of the P3
> connected to the IF output of the K3 I can see the shift you spoke of
> between USB/AFSK-A and FSK-D.  So I think we are on the same page about this
> now.
>
> The thing that concerns me now is that it's generally accepted that RTTY is
> on LSB from the carrier.  Apparently, it is not with my K2 in RTTY mode
> (AFSK) and my K3 in FSK-D mode.  Test with three different Yeasu models
> confirms they transmit and receive the mark frequency below my K2 and K3.  I
> suspect that it's the same for other models in that line and ICOM as well.
> I've read the manuals of two different ICOM radio's and they imply ICOM is
> the same as the Yeasu.  I have no knowledge of Kenwood on this subject.  So
> what this amounts to is that when I schedule to meet someone on a certain
> frequency I have to tune the mark frequency above the agreed frequency to
> communicate with them.  If I don't find them there then I have to go back to
> the agreed frequency.  (With my K3 I normally only use FSK-D.)  Of course,
> the majority of my reported frequencies in contesting do not agree that
> reported by the other corresponding party in an exchange.
>
> Not to belabor the issue, but I don't understand why Elecraft apparently
> chose this way making it different from other radio manufacturers.  I'm
> certainly open for more thoughts.  Have to get out of here at this
> moment....an electrical storm is in the immediate area.
>
> 73,
>
>
> Jim, W0EM.
>
> --
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> Sent from the Elecraft mailing list archive at Nabble.com.
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